Description from Flora of China
Croton kwangsiensis Croizat; C. lachnocarpus var. kwangsiensis (Croizat) H. S. Kiu; Mallotus yifungensis Hu & Chen.
Shrubs 1-3 m tall; indumentum densely stellate-pubescent, older branches subglabrous. Petiole (1-)2-4(-6) cm, densely stellate-pubescent, apex or base of leaf blade with 2 stalked and cupular glands; leaf blade oblong-elliptic to elliptic-ovate, rarely oblong-lanceolate, 4-10(-13) × 1.5-4(-5) cm, papery, glabrescent or only along nerves with stellate pubescence, slightly rugged adaxially, densely stellate-pubescent abaxially, base rounded to shallowly cordate, margin obscurely serrulate, usually with stalked and cupular glands, apex obtuse or acute to acuminate; basal veins 3, lateral veins 4-6. Inflorescences 1-3, terminal, 6-15 cm; bracts subulate, ca. 1 mm. Male flowers: sepals ovate-triangular, stellate-pubescent; petals oblong; stamens 10-12. Female flowers: sepals lanceolate, 2-4 mm, stellate-pubescent; ovary yellow tomentose; styles linear, 4-6 mm, bifid. Capsules slightly oblate, 6-12 mm in diam., hairy. Seeds ellipsoidal, dark brown, smooth. Fl. Apr-May, fr. Jun-Sep.
Sparsely forested slopes, thickets; 100-900 m. Guangdong, Guangxi, Guizhou, S Hunan, Jiangxi [Laos, Myanmar, Thailand, Vietnam].